Case studyIndie, solo-built2 min read
Faktur - Invoice Maker
An invoice maker app built for freelancers, consultants, and small business owners who need to send professional invoices fast.
- Solo: design, build, ASO
- Role
- 14 weeks to v1
- Timeline
- iOS & Android
- Platforms
- App Store ↗Play ↗
- Links
01 · Problem
Freelancers in France and North Africa were invoicing from Word templates or desktop tools. Existing mobile apps were built for US tax rules, missed French legal mentions (SIRET, TVA), and locked basic features behind a paywall on first launch.
02 · My role
Everything. Designed the flows, built the app in React Native with Expo, set up subscriptions, wrote the store listings and ran the keyword strategy.
03 · Key decisions
- A
Offline first, sync later
Invoices are created in local SQLite and synced to Supabase in the background. The app works on a train or a client site with no signal.
- B
Paywall after value
Three free invoices before any prompt. RevenueCat experiments showed this converted 2.1× better than a launch paywall.
- C
ASO in French first
Targeted long-tail French keywords ("facture auto-entrepreneur") where competition was thin, then expanded to English.
04 · Tech stack
- React Native + ExpoApp
- TypeScriptLanguage
- SupabaseAuth, sync
- RevenueCatSubscriptions
- expo-printPDF output
- EAS UpdateOTA releases
05 · Results, first 9 months
- Monthly installs in the first 9 months
- 9×
- Average rating, 10 reviews
- 4.9★
- Download-to-paid conversion
- 14.3%
06 · Screens
- Dashboard
- Invoices
- Clients
- Invoice
- Preview
- Paywall
